Those of you with 16x9 pulldown screens.....or I guess others too..... say I get a pulldown screen.....will the screen only pull down the length for the screen size that it is stated or is there more material after the screen to allow you to pull it down further?? I ask this because I want to ceiling mount but do not want the watchable part of the screen to be so high. The screen I am looking at is the 76" screen that comes with the 4805 that they will be promoting in a Costco sale later this month. It is a Draper I believe. I know it is not a great screen but it is the exact size I need and will suffice for the time being. Thank for the help.